Death Baron

Oracle Text

Skeleton creatures you control and other Zombie creatures you control get +1/+1 and have deathtouch.

Card Rulings

10/1/2008 A creature that’s both a Skeleton and a Zombie will get the bonus only once.
10/1/2008 Death Baron doesn’t normally affect itself. If you manage to turn it into a Skeleton, however, then it will give itself +1/+1 and deathtouch.